Arundel is steeped in history with its Castle and the River Arun running through the town. Located between Chichester and Worthing in West Sussex, Arundel is a very popular location with tourists and great place to spend a weekend away. This will be the 17th year of the Arundel Lido Triathlon Race HQ, which takes place at one of the UK’s best Lido’s, right on the banks of the River Arun and under the shadow of the castle.

COVID Restrictions. This year the event is run under strict COVID guidelines with a strong emphasis on social distancing. Our aim is to keep things the same as much as possible, although the event is likely to be smaller than previous years due to social distancing, particularly in the transition area. The swim distances are shorter although the run routes remain more or less the same.

Many competitors are keen to race again after 2021, so please don’t leave it too late to enter as we already have many entries deferred from last year. You’ll still get a great event that’s stood the test of time and has people coming back year after year. The event is suitable for triathletes of all abilities whether you’re honing your pre-season training or a complete novice, everyone is welcome.

All competitors will receive one of our famous T-Shirts, pack of Protein Balls and free unlimited race photographs from Sussex Sport Photography.  Arundel’s shops, cafes, pubs, museums, boat trips and castle will also be open to the public, making this a great event for the whole family.

What are the distances?  For 2021, the COVID version of the event is: Standard Triathlon & Relay Teams will race over an 250m swim, 35km bike, 9km run and the Sprint over a 250m swim, 19km bike, 5.4km run. The outdoor pool is heated, so no wetsuits are required.  The bike course is on popular roads used by cyclists with good visibility.  Despite the long gradual climb shortly after the start, the bike course is fast.  The Standard run takes athletes along a stunning tree lined avenue by the Castle and River Arun before heading to the village of South Stoke and returning to Offham Lodge for another short hill. The Sprint run is much flatter and turns at Offham Lodge for a fast 5km.  Standard & Relay competitors start at 6am and the Sprint at 7:15am.

Arundel Lido Triathlon

Arundel Lido Triathlon – Bike A29


“We all smashed our personal predicted times for each leg although our two teams were slow compared to the others in the relay, everyone was very happy and thoroughly enjoyed the event. Great T-shirts too!”

“Just a quick email to say thank you, wonderful event, it’s going down as my new favourite!”

“Great event and thank you from Brighton Tri Club. We had a great day.”

“Thanks for putting on a great event. Particularly impressed with the attention to safety”

Arundel Lido Triathlon


Standard: British Triathlon Affiliated: £52 | Standard: Non-affiliated: £58 | Standard Relay Team £75
Sprint: British Triathlon Affiliated: £48 | Sprint: Non-affiliated : £54

Please note, if you have registered for the race using a British Triathlon membership number you MUST present your membership card to the check-in crew or you will be required to pay a supplement for a Day Licence (£6)

Race Information 2021

Race Details NEW – PLEASE READ

Emails: 1. Sent 27/04/21 
Emails: 2. Sent 09/05/21


There will be no formal registration for 2021. There will be a registration marquee for on the day queries such as memberships & licences. There will be NO info board this year to avoid queues and to help social distancing. Rack packs were posted 6/5/21 and contain two race numbers and a bike & helmet number. Our legendary T-Shirts can be collected after the race at the finish. Race briefings will take place on poolside as you line up for your swim, but please make sure you are familiar with the course, maps and most importantly have read the Race Details.


Standard Cycle Course
Standard Run Course
Sprint Cycle Course
Sprint Run Course
Transition Layout NEW 2021
Mount / Dismount Zone NEW 2021


Race HQ is Arundel Lido, Queen Street, Arundel, West Sussex, BN18 9LE. Please make sure you leave plenty of time to park, register and rack your bike before your allocated swim start. There is free parking in Mill Road by the Castle and this is a 5-10min walk to the Lido. Alternatively, there is a Pay & Display parking in the car park immediately at the front of the Lido.

Historic Results

Arundel Lido Results 2019
Arundel Lido Results 2018
Arundel Lido Results 2017
Arundel Lido Results 2016
Arundel Lido Results 2015
Arundel Lido Results 2014
Arundel Lido Standard Results 2013
Arundel Lido Sprint Results 2013
Arundel Lido Standard Results 2011
Arundel Lido Sprint Results 2011
Arundel Lido Standard Results 2010
Arundel Lido Standard Results 2010